Crop Image
Crop an image by exact pixel coordinates, or tap a preset aspect ratio like 1:1, 16:9, or 9:16.
Cut the part of the photo you actually need — a product shot, a profile square, a story-format frame. Presets center a standard aspect ratio for you; numeric fields give exact pixel control. All in your browser, no upload.
Your image never leaves your browser — cropping happens on your device. Coordinates start at the top-left corner of the image.
How to use this calculator
- Choose the image to crop.
- Tap an aspect preset for a centered standard shape, or type X, Y, width, and height in pixels.
- Click Crop Image.
- Save the cropped file (the message confirms the exact rectangle used).
The formula
A centered aspect crop takes the largest fitting rectangle of that ratio: for 16:9 in a 4000 x 3000 image, width = 4000 and height = 4000 × 9 ÷ 16 = 2250, placed at y = (3000 − 2250) ÷ 2 = 375.
Worked example
Centering a 16:9 crop in a 4000 x 3000 photo keeps a 4000 x 2250 rectangle starting at (0, 375) — the full width, with 375 px trimmed from the top and bottom.
Frequently Asked Questions
How do the X and Y coordinates work?
They measure the top-left corner of your crop from the top-left corner of the image, in pixels. X grows to the right, Y grows downward. A crop at X=100, Y=50 with width 800 and height 600 keeps the rectangle starting 100 px in and 50 px down.
What do the aspect presets do?
Each preset centers the largest rectangle of that shape inside your image — 1:1 for profile pictures, 16:9 for video frames, 9:16 for phone stories, 4:3 and 3:2 for classic photo shapes. You can still nudge the numbers afterward.
What if I type a crop bigger than the image?
The tool clamps it safely: the rectangle is shrunk and pulled back inside the image bounds rather than erroring. The confirmation message after cropping reports the exact rectangle that was actually used.
Does cropping reduce image quality?
The kept pixels are copied one-for-one, so the cropped area looks identical to the original. Saving a JPG re-encodes at 92% quality, which is visually indistinguishable for a single save; PNG inputs stay PNG and lossless.